Search gender: all male female カイトウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: kaito Katakana: カイトウ 0 Kanji: 海東 Meaning: 海Sea. Wide and large. A place where many people and things gather. A large lake or pond. A large lake or pond. A frontier. The end of the earth. 東East. East direction. The countries and regions east of the capital. Spring in the Five Elements theory. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > カイトウ Japanese Boy Names Variations.